How it all works

We enabled this by using the Low Level Virtual Machine (LLVM) compiler infrastructure. LLVM is a modular, flexible compiler system that is used widely in a variety of projects. The key reason we choose LLVM is its flexibility and applicability to iPhone development.

We created a new compiler front end that allowed LLVM to understand ActionScript 3 and used its existing ARM back end to output native ARM assembly code. We call this Ahead of Time (AOT) compilation—in contrast to the way Adobe Flash Player and Adobe AIR function on the desktop using Just in Time (JIT) compilation. Since we are able to compile ActionScript to ARM ahead of time, the application gets all the performance benefits that the JIT would offer and the license compliance of not requiring a runtime in the final application.

By doing the compilation step, we allow developers to create applications using their Flash skills and their knowledge of ActionScript 3. In the process, we also expose the APIs that developers are familiar with so they can not only use the ActionScript language but follow the customary app-building model. When you build your application for the iPhone, there is no interpreted code and no runtime in your final binary. Your application is truly a native iPhone app.

Apps for the iPhone

So how do you build an application for the iPhone? It’s simple, really. The forthcoming beta of Adobe Flash Professional CS5 incorporates the ability to create an iPhone application. You have access to nearly all the AIR 2.0 and Flash Player 10.1 APIs. For example, you can use APIs such as RTMP, Remote Shared Objects, and AMF as well as AIR APIs like SQLite and filesystem access.

Start by creating your application on the desktop that fits the screen size of the iPhone. The iPhone’s display (like many smartphones) is 320 × 480. When the app is not in full-screen mode, 20 pixels are taken up by the status bar, so consider that when building your application.

Second, your finger is your pointing device. You can use mouse events (and touch events) to track the user’s intent, but remember that the finger is an inaccurate pointing device. Sometimes a finger goes down on the screen but moves up elsewhere. Certain behaviors that you may often employ in desktop application development will not necessarily apply to the iPhone.

The third and most important consideration when building your application is performance. Performance, performance, performance! The iPhone is most decidedly not a desktop computer. It has very powerful and sophisticated hardware, but there is a wide spectrum of capabilities between the different generations of device, the amount of memory available, and the amount of processing power your application has at its disposal.

If you have any experience developing applications with Adobe Flash Lite or other mobile platforms, you can use many of the same tricks and techniques—such as caching bitmaps, limiting the display list depth, and so on. In order to make development of high-performance applications easier, applications built for the iPhone also can take advantage of an augmented rendering pipeline that uses OpenGL ES. This augmented rendering pipeline enhances the Flash rendering model to allow developers to take advantage of the GPU on iPhones. By enabling this rendering path, you have the ability to modify your display objects to put them on a hardware surface. There are many pros and cons to choosing this rendering path, so for more information see the developer FAQ on Adobe Labs.

Once you’ve built your application, you can deploy your app on the iPhone or iPod touch for testing and tweaking via iTunes. Once you’re satisfied with your application, sign it with your distribution certificate and upload it to iTunes Connect. That’s it! You’ve made an iPhone application using Flash.

------구글번역-------

Aditya Bansod - 어도비는 지금은 애플의 아이폰은 Adobe Flash CS5를 사용하여 응용 프로그램을 만들 수 있도록 해줍니다. 맞아요 : 우리가 정말 플래시 디자이너와 개발자들이이 새로운 기능을 가지고 - 능력을 3 프로젝트 ActionScript를 함께 아이폰을 대상으로 기쁘게 생각합니다.

아시다시피, 애플의 아이폰은 한 사람이 모든 시간의 베스트 셀러 소비자 전자 기기, 그리고 가장 빠른 판매 스마트폰 적이있습니다. 개발자와 소비자 사이에 장치의 인기는 85,000 이상의 애플 리케이션은 전세계 소비자들의 폭발적인 관심을 끌었 만들었습니다.

플래시 개발자들은 그들이 어떻게 응용 프로그램 스토어에 애플 리케이션을 작성했다 열망, 그래서 우리는 그것을 쉽게 우리 사회의 그들의 지식과 창조적인 재능을 이미 가지고 만들 수있는 방법을 찾았던 중이랍니다. 소프트웨어의 조건 합의를보고, 그리고 애플 스토어에서 허용되는 콘텐츠를 허가 후, 우리는 우리가 최고의 컴파일러 옵션과 콘텐츠를 SWF 네이티브 아이폰 어플 리케이션에 패키지를 도와 우리가 개발자 커뮤니티를 제공하기 위해 결정했다. (물론, 우린 우리 방식으로 애플의 법적 조건에 부합이 그랬 겠죠.)

어도비하는 방법 바탕 화면의 어도비 AIR 개발을 밖으로 내보일 및 휴대 전화에 당신 근처에서 작업을 알아 봅니다. 우리는 어떻게 에어 SDK 및 플랫폼을 개발, 테스트를 설정하는 모바일 기능을 추가할 수 있도록 진화한다, 커버하고 자신의 콘텐츠를 게시할 수있습니다.
시작 시간부터 : 4min 30sec

How it all works

Apps for the iPhone